Modularized battery cell module structure and battery pack

Abstract

The utility model relates to the technical field of batteries, and discloses a modularized battery cell module structure and a battery pack, the modularized battery cell module structure comprises a battery cell module, an annular metal frame and an electrical component; the annular metal frame is clamped at the periphery of the battery cell module, the electrical component at least comprises a BMS module and a relay which are both fixed on the annular metal frame, the BMS module is electrically connected with the battery cell module, and the relay is electrically connected with a positive electrode or a negative electrode of the battery cell module; according to the scheme, the BMS module and the relay are fixed to the outer side of the battery cell module through the annular metal frame, so that the battery cell module, the BMS module and the relay are connected through the annular metal frame to form a compact rigid whole, and when the battery needs to be applied to a needed compact scene, only a box body with a corresponding size needs to be designed, and the battery cell module can be connected with the battery cell module. And then the whole rigid integral battery cell module structure is placed in a corresponding box body, so that the use requirements of different compact scenes can be quickly met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of battery, especially a kind of modularization electric core module structure and battery pack. BACKGROUND

[0002] At present, most batteries need to use electric core module, BMS module and relay when using, wherein BMS module real-time acquisition voltage, current and temperature and other key data of electric core module, ensure that electric core module operates in the best state, relay prevents electric core module overdischarge or short circuit by controlling the on-off of current, thereby protecting electric core module and entire electrical system from damage.Current electric core module, BMS module and relay are each independently installed in a larger box to form a larger battery pack, when needing to use electricity or charge, three are used together with entire box, since box is larger, battery is difficult to apply to various compact spaces, that is, existing battery is not convenient for quick application in different compact scenes.

[0003] Therefore, it is necessary to improve the prior art.

[0004] The above information is given as background information only to assist with an understanding of the present disclosure, and does not constitute a admission that any of the above information is used as prior art with respect to the present disclosure. SUMMARY

[0005] The utility model provides a kind of modularization electric core module structure and battery pack, mainly solve the technical problem that existing battery is not convenient for quick application in different compact scenes.

[0006] To achieve the above purpose, the utility model provides the following technical scheme:

[0007] A kind of modularization electric core module structure, including electric core module, annular metal frame and electrical component;The annular metal frame is clamped to the periphery of the electric core module, and the electrical component at least includes BMS module and relay fixed on the annular metal frame, the BMS module is electrically connected with the electric core module, and the relay is electrically connected with the positive pole or negative pole of the electric core module.

[0008] In one of the technical solutions, the annular metal frame includes first side plate, second side plate, third side plate and fourth side plate connected in sequence, and the first side plate is connected with the fourth side plate away from the second side plate and the third side plate.

[0009] The first side plate comprises a main body part and an extension part, the main body part is connected with the second side plate and the fourth side plate respectively, and the extension part extends outward relative to the main body part to form an L-shaped structure of the first side plate, and at least part of the electrical components is fixed on the extension part.

[0010] In one of the technical solutions, the relay is fixed on the extension part, and the BMS module is fixed on the second side plate.

[0011] In one of the technical solutions, one end of the main body part in the length direction is provided with a first threaded stud, the other end of the main body part in the length direction is provided with a second threaded stud, the second side plate is provided with a first through hole for the first threaded stud to pass through, the fourth side plate is provided with a second through hole for the second threaded stud to pass through, and the first threaded stud and the second threaded stud are both connected with a nut.

[0012] In one of the technical solutions, one end of the third side plate in the length direction is provided with a third threaded stud, the other end of the third side plate in the length direction is provided with a fourth threaded stud, the second side plate is provided with a third through hole for the third threaded stud to pass through, the fourth side plate is provided with a fourth through hole for the fourth threaded stud to pass through, and the third threaded stud and the fourth threaded stud are both connected with a nut.

[0013] In one of the technical solutions, the electrical components further comprise a fuse, the fuse is connected in series with the battery cell module and is fixed on the extension part.

[0014] In one of the technical solutions, the electrical components further comprise a current detection resistor, the current detection resistor is connected in series with a first electrode of the battery cell module and is fixed on the extension part, and a second electrode of the battery cell module, the fuse and the relay are connected in series in sequence, and the first electrode and the second electrode have opposite polarities.

[0015] In one of the technical solutions, the battery cell module comprises at least two rows of battery cell groups connected in series, two end plates and two binding belts.

[0016] Each of the battery cell groups comprises a plurality of battery cells connected in series, the two end plates are oppositely arranged outside the plurality of battery cell groups, the two binding belts jointly bind the two end plates and the plurality of battery cell groups, and the annular metal frame is arranged between the two binding belts.

[0017] The application further provides a battery pack comprising a box body and the modular battery cell module structure, and the modular battery cell module structure is accommodated in the box body.

[0018] Compared with the prior art, the modularized battery cell module structure has at least the following beneficial effects:

[0019] The present scheme adopts a ring-shaped metal frame clamped on the periphery of the battery cell module, and the BMS module and the relay and other electrical components can be fixed on the outer side of the battery cell module by using the ring-shaped metal frame, so that the battery cell module, the BMS module and the relay form a compact rigid whole under the connection of the ring-shaped metal frame, when it is needed to be applied to the required compact scene, only the box of the corresponding size needs to be designed, and then the whole rigid whole battery cell module structure is placed in the corresponding box, so that the use demand of various different compact scenes can be quickly met. In addition, since the integration degree is high, when it is taken out outward relative to the box, the battery cell module, the BMS module or the relay can be quickly maintained or replaced, so that the efficiency of battery maintenance or replacement is improved.

[0020] The present application has other characteristics and advantages, which will be apparent from the drawings and subsequent detailed description incorporated herein, or will be described in detail in the drawings and subsequent detailed description incorporated herein, which are collectively used to explain the specific principles of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0022] Figure 1 A structural schematic diagram of a modularized battery cell module structure provided for the embodiment of the present application;

[0023] Figure 2 A structural exploded view of a modularized battery cell module structure provided for the embodiment of the present application.

[0024] Reference signs:

[0025] 1, battery cell module; 11, battery cell group; 111, battery cell; 112, gasket; 12, end plate; 13, binding belt;

[0026] 2, annular metal frame; 21, first side plate; 211, main body part; 212, extension part; 213, first stud; 214, second stud; 22, second side plate; 221, first through hole; 222, third through hole; 23, third side plate; 231, third stud; 232, fourth stud; 24, fourth side plate; 241, second through hole; 242, fourth through hole; 3, BMS module; 4, relay; 5, fuse; 6, current sensing resistor; 7, positive terminal; 8, negative terminal. DETAILED DESCRIPTION

[0027] In order to make the technical problems to be solved by the present application, technical solutions and advantages clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0028] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0029] It should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0030] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0031] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments.

[0032] Please see Figure 1 and Figure 2The utility model embodiment provides a kind of modularization electric core module structure, including electric core module 1, annular metal frame 2 and electrical component, wherein, electrical component mainly includes BMS module 3 and relay 4, specifically, electric core module 1 includes multiple electric cores 111, multiple electric cores 111 are connected by gasket 112 as the electric core module 1 of larger electric quantity, BMS module 3 is electrically connected with electric core module 1, BMS module 3 is prior art, BMS module 3 real-time acquisition voltage, current and temperature and other key data of electric core module 1, ensure that electric core module 1 operates under optimum state, relay 4 is also prior art, relay 4 is electrically connected with the positive pole or negative pole of electric core module 1, i.e., relay 4 and the positive pole or negative pole of electric core module 1 are connected in series, when electric core module 1 is caused by excessive discharge or short circuit and leads to large current, relay 4 is disconnected by controlling current, prevent electric core module 1 excessive discharge or short circuit, to protect electric core module 1 and entire electrical system from damage. Wherein, annular metal frame 2 is clamped at the periphery of electric core module 1, and the above-mentioned BMS module 3 and relay 4 are fixed on this annular metal frame 2.

[0033] Specifically, the present scheme adopts a clamping annular metal frame 2 in the periphery of electric core module 1, BMS module 3 and relay 4 and other electrical components can be fixed on the outside of electric core module 1 using this annular metal frame 2, so that electric core module 1, BMS module 3 and relay 4 form a compact rigid whole under the connection of annular metal frame 2, when needed to be applied to the required compact scene, only the corresponding size of box body needs to be designed, then the whole rigid whole electric core module structure is placed in the corresponding box body, the use demand of multiple different compact scenes can be quickly met. In addition, the present scheme has high integration, so when it is taken out outward relative to the box body, electric core module 1, BMS module 3 or relay 4 can be quickly maintained or replaced, so as to improve the efficiency of battery maintenance or replacement. The present scheme only uses one relay 4 as the on-off action of charging and discharging, which has advantages in structure arrangement and manufacturing cost.

[0034] In one embodiment, the modularization electric core module structure can also include a liquid cooling system or a fire extinguishing device. When the BMS module 3 detects that the temperature of the electric core module 1 is too high, the liquid cooling system can cool the electric core module 1 in time. When the electric core module 1 catches fire, the fire extinguishing device can extinguish the fire in time, improving the safety of battery use.

[0035] Please refer to Figure 1 And Figure 2, the annular metal frame 2 specifically comprises a first side plate 21, a second side plate 22, a third side plate 23 and a fourth side plate 24 connected in sequence, and an end of the first side plate 21 away from the second side plate 22 is connected with an end of the fourth side plate 24 away from the third side plate 23, so that the first side plate 21, the second side plate 22, the third side plate 23 and the fourth side plate 24 jointly enclose the outer periphery of the battery cell module 1, wherein the first side plate 21 comprises a main body part 211 and an extension part 212 connected in sequence, the main body part 211 is connected with the second side plate 22 and the fourth side plate 24 respectively, and the extension part 212 extends outward relative to the bottom of the main body part 211 so that the first side plate 21 forms an L-shaped structure, at least part of the above-mentioned electrical components are fixed on the extension part 212, preferably the above-mentioned relay 4 is fixed on the extension part 212, and the above-mentioned BMS module 3 is fixed on the second side plate 22.

[0036] Please refer to Figure 1 and Figure 2 again, one end of the main body part 211 in the length direction is provided with a first threaded stud 213, the other end of the main body part 211 in the length direction is provided with a second threaded stud 214, the second side plate 22 is provided with a first through hole 221, and the fourth side plate 24 is provided with a second through hole 241, during installation, the first threaded stud 213 is passed through the first through hole 221, and the second threaded stud 214 is passed through the second through hole 241, then a nut is screwed on the first threaded stud 213 and the second threaded stud 214 respectively, so as to realize the connection of the main body part 211 of the first side plate 21 and the second side plate 22, and realize the connection of the main body part 211 of the first side plate 21 and the fourth side plate 24. Similarly, one end of the third side plate 23 in the length direction is provided with a third threaded stud 231, the other end of the third side plate 23 in the length direction is provided with a fourth threaded stud 232, the second side plate 22 is provided with a third through hole 222, and the fourth side plate 24 is provided with a fourth through hole 242, during installation, the third threaded stud 231 is passed through the third through hole 222, and the fourth threaded stud 232 is passed through the fourth through hole 242, then a nut is screwed on the third threaded stud 231 and the fourth threaded stud 232 respectively, so as to realize the connection of the third side plate 23 and the second side plate 22, and realize the connection of the third side plate 23 and the fourth side plate 24. By adopting this structure, the advantages of simple structure, low cost and high reliability of clamping the battery cell module 1 are achieved.

[0037] Please refer to Figure 1 and Figure 2, the electrical components can further include a fuse 5 and a current detection resistor 6, the fuse 5 and the current detection resistor 6 are respectively connected in series with the battery cell module 1 and are fixed on the extension part 212, the fuse 5 is faster than the relay in response, and can timely cut off the circuit when the battery current is too large, thereby further improving the safety of the battery use. Preferably, the current detection resistor 6 is designed to be directly connected in series with the first electrode of the battery cell module 1, and the fuse 5, the relay 4 and the second electrode of the battery cell module 1 are designed to be connected in series, of course, the polarity of the first electrode and the second electrode is opposite, that is, one of the first electrode and the second electrode is a positive electrode, and the other is a negative electrode, and the first electrode is preferably a negative electrode and the second electrode is preferably a positive electrode. Further, the positive electrode interface 7 is arranged at the end of the fuse 5 away from the relay 4, and the negative electrode interface 8 is arranged at the end of the current detection resistor 6 away from the battery cell module 1, and the positive electrode interface 7 and the negative electrode interface 8 are arranged to facilitate the charging or discharging of the battery cell module structure.

[0038] Please refer to Figure 1 and Figure 2 , the battery cell module 1 includes at least two rows of battery cell groups 11 arranged in series along the Y direction, two end plates 12 arranged opposite to each other along the X direction outside the plurality of battery cell groups 11, and two binding belts 13, each battery cell group 11 includes a plurality of battery cells 111 connected in series along the X direction, and the two binding belts 13 collectively bind the two end plates 12 and the plurality of rows of battery cell groups 11, and the battery cell module 1 only needs to loosen the two binding belts 13 to quickly take out each battery cell 111, thereby having the advantages of convenient assembly and disassembly and improving the efficiency of replacing the battery cells 111 in the later stage. Based on the structure of the battery cell module 1, the annular metal frame 2 is arranged between the two binding belts 13 to collectively bind the plurality of rows of battery cell groups 11 with the two binding belts 13, thereby improving the firmness of binding the plurality of battery cells 111 inside.

[0039] The embodiment also provides a battery pack including a box body and the modular battery cell module structure, and the modular battery cell module structure is accommodated in the box body. Since the battery pack of the embodiment applies the modular battery cell module structure, the battery pack of the embodiment also has the advantages of convenient disassembly and maintenance.

[0040] The above is only a preferred embodiment of the present application, and only the technical principle of the present application is specifically described, and these descriptions are only for explaining the principle of the present application, and cannot be explained as the limitation of the protection scope of the present application in any way. Based on the explanation herein, any modification, equivalent replacement and improvement within the spirit and principle of the present application, and other specific embodiments of the present application that can be thought by those skilled in the art without creative labor, should be included in the protection scope of the present application.

Claims

1. A modular cell module structure, characterized by, The module includes an electric cell module, a ring-shaped metal frame and electrical components; the ring-shaped metal frame is clamped on the periphery of the electric cell module, and the electrical components at least include a BMS module and a relay which are both fixed on the ring-shaped metal frame; the BMS module is electrically connected with the electric cell module, and the relay is electrically connected with the positive electrode or the negative electrode of the electric cell module.

2. The modular cell module structure of claim 1, wherein, The ring-shaped metal frame includes a first side plate, a second side plate, a third side plate and a fourth side plate which are sequentially connected, and one end of the first side plate away from the second side plate is connected with one end of the fourth side plate away from the third side plate. The first side plate includes a main body part and an extension part which are connected, the main body part is connected with the second side plate and the fourth side plate respectively, the extension part extends outward relative to the main body part to form an L-shaped structure of the first side plate, and at least part of the electrical components is fixed on the extension part.

3. The modular cell module structure of claim 2, wherein, The relay is fixed on the extension part, and the BMS module is fixed on the second side plate.

4. The modular cell module structure of claim 2, wherein, One end of the main body part in the length direction is provided with a first stud, the other end of the main body part in the length direction is provided with a second stud, the second side plate is provided with a first through hole for the first stud to pass through, the fourth side plate is provided with a second through hole for the second stud to pass through, and nuts are connected to the first stud and the second stud.

5. The modular cell module structure of claim 2, wherein, One end of the third side plate in the length direction is provided with a third stud, the other end of the third side plate in the length direction is provided with a fourth stud, the second side plate is provided with a third through hole for the third stud to pass through, the fourth side plate is provided with a fourth through hole for the fourth stud to pass through, and nuts are connected to the third stud and the fourth stud.

6. The modular cell module structure of claim 2, wherein, The electrical components further include a fuse, the fuse is connected in series with the electric cell module and is fixed on the extension part.

7. The modular cell module structure of claim 6, wherein, The electrical components further include a current detection resistor, the current detection resistor is connected in series with a first electrode of the electric cell module and is fixed on the extension part, and a second electrode of the electric cell module, the fuse and the relay are connected in series, and the polarities of the first electrode and the second electrode are opposite.

8. The modular cell module structure of claim 1, wherein, The electric cell module includes at least two rows of electric cell groups connected in series, two end plates and two binding belts. Each of the electric cell groups includes a plurality of electric cells connected in series, the two end plates are oppositely arranged outside the plurality of electric cell groups, and the two binding belts jointly bind the two end plates and the plurality of electric cell groups, and the ring-shaped metal frame is arranged between the two binding belts.

9. A battery pack, characterized by, The battery module includes a box body and the modular electric cell module structure according to any one of claims 1 to 8, and the modular electric cell module structure is accommodated in the box body.

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