Support, battery pack, and electric device

Abstract

The utility model provides a kind of support, battery pack and electric equipment, support includes at least two support units and heat insulating part, each support unit is arranged along first direction, each support unit is equipped with slot, heat insulating part is inserted in the slot of each support unit, to make each support unit be connected. The present application is split into at least two shorter support units by longer support, and the heat insulating part between battery module is structurally reused, by inserting heat insulating part in the slot of each support unit, so that support unit is connected in one, reduce the manufacturing cost of support.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a bracket, a battery pack, and an electrical device. Background Technology

[0002] Battery packs typically have brackets to fix and support the battery modules. As people's demand for battery pack energy increases, the length of the battery modules is also gradually increasing, and the length of the brackets that fix the battery modules is also increasing, which makes the manufacturing of the brackets more difficult.

[0003] Therefore, how to reduce the support cost of stents has become an urgent problem to be solved in the industry. Utility Model Content

[0004] In view of this, the present invention aims to provide a bracket, a battery pack, and an electrical device, in order to solve the problem of high manufacturing cost of brackets in related technologies.

[0005] To achieve the objectives of this application, in a first aspect, this application proposes a scaffold, comprising:

[0006] At least two support units, each support unit being arranged along a first direction, and each support unit having a slot; and

[0007] A heat insulation element is inserted into a slot in each of the bracket units to connect the bracket units.

[0008] In conjunction with the first aspect, in one possible implementation, the support unit includes a connecting arm and two clamping walls, the two clamping walls being spaced apart on both sides of the connecting arm along a second direction, the second direction being two intersecting directions with the first direction;

[0009] The slot is formed between the connecting arm and the two clamping walls.

[0010] In conjunction with the first aspect, in one possible implementation, the support unit further includes a mounting plate, one end of which is connected to the clamping wall and the other end of which extends away from the slot;

[0011] The mounting plate is provided with mounting holes for installing wire harnesses.

[0012] In conjunction with the first aspect, in one possible implementation, the slot has a socket for insertion of the thermal insulation element;

[0013] The bracket also includes a buffer element that covers the socket and is used to contact the battery pack housing to create a buffer between the bracket and the housing.

[0014] In conjunction with the first aspect, in one possible implementation, the support unit includes a connecting arm and two clamping walls, the two clamping walls being spaced apart on both sides of the connecting arm along a second direction; the slot is formed between the connecting arm and the two clamping walls;

[0015] The support unit also includes a support plate, one end of which is connected to the clamping wall, and the other end of which extends away from the slot.

[0016] The buffer is located on the support plate.

[0017] In conjunction with the first aspect, in one possible implementation, the support further includes a busbar support, the busbar support comprising:

[0018] A base, which is connected to the support unit;

[0019] A support rod, which is disposed on the base;

[0020] A fixing plate is provided at intervals along a third direction on the support rod, and a cluster space is formed between each adjacent fixing plate, the cluster space being used for the passage of the busbar.

[0021] In conjunction with the first aspect, in one possible implementation, at least one of the fixing plates protrudes from the end away from the support rod toward the side opposite to and / or facing the base to form a limiting portion.

[0022] In conjunction with the first aspect, in one possible implementation, at least one of the support units is provided with a slot;

[0023] The base is provided with a buckle, which is engaged in the slot to connect the busbar bracket to the bracket unit.

[0024] Secondly, this application also proposes a battery pack, the battery pack including a bracket, the bracket comprising:

[0025] At least two support units, each support unit being arranged along a first direction, and each support unit having a slot; and

[0026] A heat insulation element is inserted into a slot in each of the bracket units to connect the bracket units.

[0027] Thirdly, this application also proposes an electrical device, the electrical device including a battery pack, the battery pack comprising:

[0028] At least two support units, each support unit being arranged along a first direction, and each support unit having a slot; and

[0029] A heat insulation element is inserted into a slot in each of the bracket units to connect the bracket units.

[0030] This application reduces the manufacturing cost of the bracket by splitting a longer bracket into at least two shorter bracket units and reusing the structure of the heat insulation component located between the battery modules. By inserting the heat insulation component into the slot of each bracket unit, the bracket units are connected as one unit without adding additional connectors. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the battery pack structure provided in this application after the buffer component has been removed.

[0032] Figure 2 for Figure 1 A three-dimensional structural diagram of the central support.

[0033] Figure 3 for Figure 2 Enlarged view at point A.

[0034] Figure 4 for Figure 1 A three-dimensional structural diagram of the middle support unit.

[0035] Figure 5 for Figure 1 Showing a top view behind the buffer.

[0036] Figure 6 for Figure 4 Side view.

[0037] Figure 7 for Figure 1 A three-dimensional structural diagram of the busbar support.

[0038] Figure 8 for Figure 1 Exploded view of the busbar support and support unit.

[0039] Explanation of reference numerals in the attached figures

[0040] 1000-battery pack;

[0041] 1-Battery module;

[0042] 2-Bracket, 21-Bracket Unit, 211-Slot, 2111-Socket, 212-Connecting Arm, 213-Clamping Arm, 214-Mounting Plate, 2141-Mounting Hole, 215-Support Plate, 216-Connecting Plate, 2161-Connecting Lug, 2162-Card Slot, 22-Heat Insulation Component, 23-Buffer Component, 24-Bus Bus Bracket, 241-Base, 242-Support Rod, 243-Fixing Plate, 2431-Limiting Part, 244-Cluster Space, 245-Snap-on, 2451-First Snap-on, 24511-First Snap-on Part, 2452-Second Snap-on, 24521-Second Snap-on Part. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0044] This application proposes an electrical device, which can be a mobile phone, a vehicle, a ship, or an aircraft; this application does not limit the scope of the device.

[0045] In some embodiments of this application, the electrical device includes a load and a battery pack, the load being used to consume electrical energy to perform a specific task or function, and the battery pack being used to provide electrical energy to the load.

[0046] For example, taking a vehicle as an example, when the electrical equipment is a vehicle, the vehicle can be a gasoline-powered vehicle, an electric vehicle, or a hybrid vehicle; this application does not limit this. The vehicle includes a body, a battery pack, and a load. The body serves as the supporting frame of the vehicle, used to support and connect the various component assemblies. The body has a battery compartment, and the battery pack is housed within the battery compartment. The battery pack is electrically connected to the load, which can be an electric motor, an air conditioning system, a central control system, or even a lighting system, a heating system, etc. The battery pack provides power to these loads, thereby ensuring the normal operation of the vehicle and the implementation of its various functions.

[0047] Please refer to Figure 1In some embodiments of this application, the battery pack 1000 includes a housing (not shown in the figure), a battery module 1, and a support 2. The housing serves as the main structural component of the battery pack 1000, supporting and connecting the various components of the battery pack 1000. The housing includes a body and a cover. The body forms a cell cavity with an opening on one side, through which the battery module 1 can be installed. The cover covers the opening to seal the cell cavity, thereby reducing the impact of external moisture or impurities on the battery module 1 inside the cell cavity.

[0048] The battery module is connected to the load via a busbar within the battery pack to provide energy to the load. In some embodiments of this application, the battery module includes multiple battery cells connected in series or parallel, and a mounting bracket for fixing each battery cell. The battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, or a secondary battery; this application does not impose any limitations on this.

[0049] The bracket is set inside the cell cavity. The bracket can be welded to the cell cavity, or it can be threaded into the cell cavity by a threaded part, or it can be snapped into the cell cavity by a clip. This application does not limit this.

[0050] The bracket serves two purposes: firstly, it provides support for the cover, preventing displacement and deformation due to gravity or external impact, thus improving the stability of the enclosure in supporting the battery module; secondly, it provides fixing points for the battery module within the cell cavity, preventing movement of the battery module within the cell cavity when the battery pack moves, thereby improving the stability of the battery module within the cell cavity.

[0051] As people's demand for battery pack 1000 energy increases, the length of battery module 1 also gradually increases, and the length of bracket 2 that fixes battery module 1 also increases accordingly, which makes the production of bracket 2 more difficult.

[0052] For ease of explanation, we will now take the X direction in the diagram as the first direction, the Z direction as the second direction, and the Y direction as the third direction.

[0053] Please refer to Figure 2 and Figure 3 To solve the above problems, in this application, the bracket 2 includes at least two bracket units 21 and a heat insulation component 22. The bracket unit 21 serves as the main structural body of the bracket and is used to fix and support the cover and the battery module 1.

[0054] The support unit 21 can be made of metal or non-metal, and this application does not impose any restrictions on the material. In one embodiment of this application, the support unit 21 is made of plastic. Compared with metal, plastic is cheaper and lighter, which can effectively reduce the weight of the battery pack 1000 and reduce the manufacturing cost of the battery pack 1000. Furthermore, when the electrical equipment is a vehicle such as a car or a ship, the lighter battery pack can also reduce the energy consumption of the electrical equipment.

[0055] In particular, in one example of this application, the support unit 21 is made of nylon 66 (PA66) mixed with 30% glass fiber (GF). With this material, the support unit 21 can be guaranteed to provide strength for the box while reducing the weight of the support unit 21.

[0056] The number of support units 21 can be two, three, or four. The length of each support unit 21 can be the same or different, and this application does not impose any restrictions on this. In one example, the total length of the support 2 in the first direction X is 1200mm. The support unit 21 includes a first support unit 21 and two second support units 21 located on both sides of the first support unit 21. The length of the first support unit 21 in the first direction X is 500mm, the length in the second direction Y is 50mm, and the length in the third direction Z is 50mm. The length of the second support unit 21 in the first direction X is 330mm, the length in the second direction Y is 50mm, and the length in the third direction Z is 50mm. The spacing between adjacent support units 21 is 20mm. This arrangement allows the designer to flexibly adjust the length of the support units 21 according to the needs of the actual application environment, thereby ensuring that each support unit 21 maintains a relatively uniform stress state when bearing a load, reducing local stress concentration, and extending the service life of the support unit 21. On the other hand, the different lengths of the first bracket unit 21 and the second bracket unit 21 also allow the assembler to intuitively identify the matching position of each bracket unit 21 when assembling the bracket unit 21, avoiding incorrect assembly due to the same length, and improving the assembly efficiency of the battery pack 1000.

[0057] The heat insulation component 22 is used to delay heat transfer between battery modules 1. The material of the heat insulation component 22 can be mica, polyurethane, or aerogel. This application does not limit the material of the heat insulation component 22.

[0058] In related technologies, thermal insulation components are usually placed between adjacent battery modules to slow down the spread of heat between battery modules and improve the reliability of the battery pack in the event of thermal runaway.

[0059] In this application, each support unit 21 is provided with a slot 211, and the slot 211 has an insertion port 2111. The heat insulation member 22 can be inserted into the slot 211 of each support unit 21 through the insertion port 2111 so that each support unit 21 is connected.

[0060] This application reduces the requirements for manufacturing equipment and lowers the manufacturing cost of the support 2 by dividing the longer support 2 into at least two shorter support units 21. Simultaneously, this application also reuses the heat insulation component 22 by providing slots 211 within each support unit 21 and inserting the heat insulation component 22 into the slots 211 of each support unit 21. This allows the support units 21 to be connected as a single unit without adding additional connectors, saving materials and assembly time for the support 2. Furthermore, the support units 21 also protect the heat insulation component 22, reducing its contact area with the external environment, minimizing the possibility of damage during use, and extending its service life.

[0061] Please refer to Figure 4 To reduce the difficulty of inserting the heat insulation component 22 into the slot 211, in one embodiment of this application, the support unit 21 includes a connecting arm 212 and two clamping walls. The two clamping walls are spaced apart on both sides of the connecting arm 212 along a second direction Y, where the second direction Y intersects with the first direction X. The slot 211 is formed between the connecting arm 212 and the two clamping walls. When the heat insulation component 22 is inserted into the slot 211 through the insertion port 2111, the two clamping arms 213 can move away from the heat insulation component 22 under the action of the heat insulation component 22, thereby leaving space for the heat insulation component 22 to enter the insertion port 2111 and reducing the assembly difficulty of the heat insulation component 22 in the insertion port 2111.

[0062] To facilitate wiring harness installation, in one embodiment of this application, the bracket unit 21 further includes a mounting plate 214. One end of the mounting plate 214 is connected to the clamping wall, and the other end extends away from the slot 211. The mounting plate 214 is provided with mounting holes 2141, which are used to cooperate with the mounting part of the wiring harness or water pipe in the battery pack 1000 to fix the wiring harness or water pipe of the battery pack 1000 on the bracket 2. This reduces the possibility of the wiring harness or water pipe moving and being damaged in the battery pack 1000 when the electrical equipment is moved, extends the service life of the battery pack 1000, reduces the abnormal noise of the battery pack 1000, and improves the quietness of the electrical equipment.

[0063] It should be noted that there are multiple ways to install the wiring harness and water pipe of the solar panel onto the mounting plate 214 through the mounting hole 2141. The wiring harness and water pipe can be installed into the mounting hole 2141 by means of threaded parts or by means of snap-fit ​​parts. This application does not limit this.

[0064] Please refer to Figures 4 to 6 In one embodiment of this application, the bracket 2 further includes a buffer 23. The material of the buffer 23 can be foam, silicone, or rubber, and this application does not limit this. The buffer 23 is disposed between the bracket unit 21 and the cover, and covers the socket 2111. The buffer 23 can, on the one hand, form a buffer between the bracket unit 21 and the cover, thereby preventing direct contact between the bracket unit 21 and the cover, reducing collisions and friction between the bracket unit 21 and the cover during the use of electrical equipment, extending the service life of the bracket unit 21, reducing abnormal noise of the battery pack 1000, and improving the quietness of the electrical equipment.

[0065] To improve the stability of the buffer 23 during installation on the support unit 21, in one embodiment of this application, the support unit 21 includes a connecting arm 212 and two clamping walls, which are spaced apart on both sides of the connecting arm 212 along a second direction Y; a slot 211 is formed between the connecting arm 212 and the two clamping walls; the support unit 21 also includes a support plate 215, one end of which is connected to the clamping wall, and the other end extends away from the slot 211; the buffer 23 is disposed on the support plate 215.

[0066] The buffer 23 can be attached to the support plate 215 by adhesive backing, by screwing it into the support plate 215 by thread, or by snapping it into the support plate 215. This application does not limit this.

[0067] The support plate 215 serves two purposes. First, it increases the contact area between the buffer 23 and the bracket 2, thereby improving the stability of the buffer 23 on the bracket 2. Second, the support plate 215 ensures that the weight of the cover or external impact force can be evenly transmitted to all parts of the bracket unit 21 through the buffer 23, improving the uniformity of the force on the bracket unit 21, preventing deformation and cracking of the bracket unit 21 due to local stress accumulation, and extending the service life of the bracket 2.

[0068] Please refer to Figure 7 and Figure 8 In one embodiment of this application, the bracket 2 further includes a busbar bracket 24, which is used to fix the busbar of the battery pack 1000. Specifically, the busbar bracket 24 includes a base 241, a support rod 242, and a fixing plate 243. The base 241 serves as the base of the busbar bracket 24 and is used to connect to the bracket unit 21.

[0069] There are multiple ways to connect the base 241 to the support unit 21. In one embodiment of this application, at least one support unit 21 is provided with a connecting plate 216. The connecting plate 216 is connected to the clamping arm 213 and the connecting arm 212. The connecting plate 216 extends outward with a connecting lug 2161. The connecting lug 2161 is provided with a slot 2162. The base 241 is provided with a buckle. The buckle is engaged in the slot 2162 so that the busbar support 24 is connected to the support unit 21.

[0070] Understandably, in other possible embodiments of this application, the base 241 and the support unit 21 can also be connected by threads or magnetic attraction. This application does not limit this. Compared with other connection methods, snap-fit ​​connection can effectively reduce the manufacturing cost of the base 241 and the support unit 21 and improve the assembly efficiency of the base 241 and the support unit 21.

[0071] To improve the stability of the engagement between the base 241 and the support unit 21, in one embodiment of this application, the base 241's latch includes a first latch 2451 and a second latch 2452. The first latch 2451 has a first latching portion 24511 that engages with the latching groove 2162, and the second latch 2452 has a second latching portion 24521 that engages with the latching groove 2162. The first latching portion 24511 and the second latching portion 24521 are arranged in opposite directions to each other. This arrangement provides a double locking mechanism between the base 241 and the support unit 21. When the base 241 is installed onto the support unit 21, the first latching portion 24511 and the second latching portion 24521 can simultaneously enter the latching groove 2162 and engage with it, thereby improving the stability of the connection between the base 241 and the support unit 21. On the other hand, the setting of the first buckle 2451 and the second buckle 2452 can also improve the uniformity of the force on the slot 2162, avoid stress accumulation caused by single-point force on the connecting ear 2161, reduce the possibility of damage to the connecting ear 2161 due to stress, and extend the service life of the bracket 2.

[0072] Support rod 242 is provided on base 241, and fixing plate 243 is provided at intervals along the third direction Z on support rod 242. A cluster space 244 is formed between each adjacent fixing plate 243. A mounting port is provided on one side of cluster space 244, and the busbar of battery pack 1000 can be installed in cluster space 244 through mounting port.

[0073] The cluster space 244 is used to snap the busbars together, thereby stacking and fixing the busbars on the bracket along the second direction Y, improving the stability of the busbars within the battery pack 1000, reducing the possibility of the busbars within the battery pack 1000 moving when the electrical equipment is moved, and extending the service life of the busbars in the battery pack 1000.

[0074] To improve the stability of the busbar fixing in the cluster space 244, in one embodiment of this application, at least one fixing plate 243 is provided, with one end away from the support rod 242 protruding away from and / or facing the base 241 to form a limiting part 2431. The limiting part 2431 is used to form a block at the mounting opening of the cluster space 244, thereby limiting the busbar in the cluster space 244, preventing the busbar from coming out of the cluster space 244, and improving the stability of the busbar fixing in the cluster space 244.

[0075] To extend the service life of the busbar bracket 24, in one embodiment of this application, a buffer 23 is provided at the fixing plate 243 opposite to the cover plate of the busbar bracket 24. The buffer 23 is used to form a buffer between the fixing plate 243 and the cover, thereby preventing direct contact between the bracket unit 21 and the cover, reducing the collision and friction between the bracket unit 21 and the cover during the power consumption of the electrical equipment, extending the service life of the busbar bracket 24, reducing the abnormal noise of the battery pack 1000, and improving the quietness of the electrical equipment.

[0076] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications or equivalent substitutions made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bracket, said bracket being applied to a battery pack, characterized in that, include: At least two support units, each support unit being arranged along a first direction, and each support unit having a slot; and A thermal insulation element is inserted into a slot in all of the support units to connect the support units.

2. The bracket as described in claim 1, characterized in that, The support unit includes a connecting arm and two clamping walls, the two clamping walls being spaced apart on both sides of the connecting arm along a second direction, the second direction intersecting the first direction; The slot is formed between the connecting arm and the two clamping walls.

3. The bracket as described in claim 2, characterized in that, The bracket unit also includes a mounting plate, one end of which is connected to the clamping wall, and the other end of which extends away from the slot. The mounting plate is provided with mounting holes for installing wire harnesses.

4. The stent as described in any one of claims 1-3, characterized in that, The slot has a socket for inserting the heat insulation component; The bracket also includes a buffer element, which covers the socket and is supported between the bracket and the battery pack housing.

5. The bracket as described in claim 4, characterized in that, The support unit includes a connecting arm and two clamping walls, the two clamping walls being spaced apart on both sides of the connecting arm along a second direction; the slot is formed between the connecting arm and the two clamping walls; The support unit also includes a support plate, one end of which is connected to the clamping wall, and the other end of which extends away from the slot. The buffer element is disposed on the surface of the support plate.

6. The bracket as described in claim 1, characterized in that, The support also includes a busbar support, which comprises: A base, which is connected to the support unit; A support rod, which is disposed on the base; A fixing plate is provided at intervals along a third direction on the support rod, and a cluster space is formed between each adjacent fixing plate, the cluster space being used for the passage of the busbar.

7. The bracket as described in claim 6, characterized in that, At least one of the fixing plates protrudes from the end away from the support rod toward the side facing away from and / or toward the base to form a limiting portion.

8. The bracket as described in claim 6, characterized in that, At least one of the bracket units is provided with a slot; The base is provided with a buckle, which is engaged in the slot to connect the busbar bracket to the bracket unit.

9. A battery pack, characterized in that, Includes the stent as described in any one of claims 1-8.

10. An electrical appliance, characterized in that, Includes the battery pack as described in claim 9.

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