Battery heating plate and battery cartridge

Abstract

The present application relates to the technical field of battery baking, in particular to a battery heating plate and a battery box, the battery heating plate comprising: a lateral heating part for transferring heat to the side of the battery, the lateral heating part being provided with a plurality of first heating channels, a plurality of first hollow channels and a plurality of first through holes, the plurality of first heating channels and the plurality of first hollow channels being arranged alternately, and the first through holes penetrating the first hollow channels; a bottom heating part connected perpendicularly to the lateral heating part, for transferring heat to the bottom of the battery, the bottom heating part being provided with a plurality of second heating channels, a plurality of second hollow channels and a plurality of second through holes, the plurality of second heating channels and the plurality of second hollow channels being arranged alternately, and the second through holes penetrating the second hollow channels; a plurality of heating elements arranged in the first heating channels and the second heating channels, for emitting heat radiation; and a spacing element arranged in the first through holes and the second through holes, for spacing the battery from the lateral heating part and the bottom heating part.

Description

Technical Field

[0001] This invention relates to the field of battery baking technology, specifically to a battery heating plate and a battery material box. Background Technology

[0002] There are many control measures in the battery manufacturing process to ensure battery quality and product safety, and moisture is one of the key control points in lithium battery manufacturing. During battery processing, it is necessary to remove moisture from the battery. If the moisture is not completely removed, it will greatly reduce the battery's performance and lifespan.

[0003] Currently, baking equipment is generally used to control the water content of batteries before electrolyte filling. After the battery is held in a battery box, the battery box is placed in a single-layer or multi-layer oven for single-sided baking and drying to remove water. When the lithium battery enters the baking equipment, only the heating plate on the side contacts the bottom of the lithium battery for baking, relying on the lithium battery itself for heat conduction. This results in long heating time, increased energy consumption, and low production efficiency. Furthermore, the need to install multiple heating plates in the battery box increases the weight of the battery box and reduces its service life. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention provides a battery heating plate and a battery box, which aims to solve the problems of long heating time, high energy consumption and heavy weight of the existing heating plate.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] In a first aspect, this application provides a battery heating plate, comprising:

[0007] A lateral heating section is used to transfer heat to the side of the battery. The lateral heating section is provided with multiple first heating channels, multiple first hollow channels and multiple first through holes. The multiple first heating channels and multiple first hollow channels are arranged alternately, and the first through holes pass through the first hollow channels.

[0008] The bottom heating section is vertically connected to the side heating section and is used to transfer heat to the bottom of the battery. The bottom heating section is provided with multiple second heating channels, multiple second hollow channels and multiple second through holes. The multiple second heating channels and multiple second hollow channels are arranged alternately, and the second through holes pass through the second hollow channels.

[0009] Multiple heating elements are disposed in the first heating channel and the second heating channel to emit thermal radiation;

[0010] A spacer element is disposed in the first through hole and the second through hole to create a space between the battery and the side heating part and the bottom heating part.

[0011] Furthermore, it also includes:

[0012] Multiple battery limiting blocks are disposed on the top of the lateral heating section and are spaced apart along the length direction of the lateral heating section to separate adjacent batteries.

[0013] Furthermore, the battery limiting block includes:

[0014] The limiting portion includes a first limiting portion extending along the length direction of the lateral heating portion and a second limiting portion extending along the thickness direction of the lateral heating portion, wherein the first limiting portion and the second limiting portion are connected to form a cross-shaped structure;

[0015] The connecting part includes a first connecting part and a second connecting part. The first connecting part is connected to one end of the second limiting part, and the second connecting part is connected to the other end of the second limiting part. The first connecting part is disposed on one side of the lateral heating part, and the second connecting part is disposed on the other side of the lateral heating part. The first connecting part is provided with a first screw hole, and the second connecting part is provided with a second screw hole.

[0016] The lateral connecting part is provided with a third screw hole. The connecting element passes through the first screw hole, the third screw hole and the second screw hole at the same time to realize the fixed connection between the battery limiting block and the lateral heating part.

[0017] Furthermore, the tops of the first limiting part and the second limiting part are provided with chamfered structures to guide the battery into the space between adjacent battery heating plates.

[0018] Furthermore, the lateral heating section and the bottom heating section are T-shaped structures integrally formed from aluminum.

[0019] Furthermore, the bottom heating section is divided by the side heating section into:

[0020] A first heating part, wherein a first overlapping part is provided at the end of the first heating part;

[0021] The second heating part has a second overlapping part at its end;

[0022] The first and second overlapping portions of the adjacent battery heating plates cooperate to overlap each other and jointly transfer heat to the bottom of the battery.

[0023] Furthermore, the lateral heating section is provided with a first arc-shaped groove extending along the length direction of the lateral heating section in the thickness direction corresponding to the first heating channel;

[0024] The bottom heating section has a second arc-shaped groove extending along the length direction of the bottom heating section in the thickness direction corresponding to the second heating channel.

[0025] Furthermore, the length of the spacer element extending beyond the first through hole and the second through hole on the side facing the battery is 2-3 mm.

[0026] Furthermore, the bottom heating section is also provided with a plurality of third through holes for passing a temperature probe through the third through holes to measure the temperature at the bottom of the battery.

[0027] Secondly, this application also provides a battery box, including a battery heating plate as described in any of the above claims.

[0028] The battery heating plate and battery box described in this invention have the following advantages:

[0029] By installing heating elements in the first heating channel of the lateral heating section and the second heating channel of the bottom heating section, the battery heating plate can radiate heat to the bottom and sides of the battery. Simultaneously, spacers in the first and second through holes provide support for the battery in both the lateral and bottom heating sections, achieving non-contact heating between the battery and the heating plate. Since the lateral heating section of the battery heating plate heats the sides of the battery and the bottom heating section heats the bottom of the battery, the heating area of ​​the battery heating plate is increased, the heat conduction path of the battery is shortened, thereby improving heating efficiency, reducing battery baking time, and lowering energy consumption. Furthermore, the arrangement of the first hollow channel in the lateral heating section and the second hollow channel in the bottom heating section reduces the weight of the battery heating plate, thereby reducing the overall weight of the battery box and extending the service life of the battery heating plate. At the same time, the alternating arrangement of multiple first heating channels and multiple first hollow channels, as well as multiple second heating channels and multiple second hollow channels, allows the first and second hollow channels to store the radiated heat from the heating elements within the first and second heating channels respectively. This avoids drastic heat fluctuations, keeps the heating temperature stable, and ensures the uniformity of battery heating by the T-shaped heating plate. Attached Figure Description

[0030] Figure 1 This is a three-dimensional structural diagram of the battery box according to an embodiment of the present invention;

[0031] Figure 2 This is a three-dimensional structural diagram of the battery heating plate according to an embodiment of the present invention;

[0032] Figure 3 This is a side view of the battery heating plate according to an embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of the assembly of the battery and the battery heating plate according to an embodiment of the present invention.

[0034] Explanation of reference numerals in the attached figures:

[0035] 10. Battery box; 1. Battery heating plate; 11. Side heating section; 111. First heating channel; 112. First hollow channel; 113. First through hole; 114. First arc groove; 12. Bottom heating section; 121. Second heating channel; 122. Second hollow channel; 123. Second through hole; 124. First heating section; 125. Second heating section; 126. First overlapping section; 127. Second overlapping section; 128. Second arc groove; 13. Spacer element; 14. Battery limiting block; 141. Limiting section; 1411. First limiting section; 1412. Second limiting section; 142. Connecting section; 1421. First connecting section; 1422. Second connecting section; 2. L-shaped battery heating plate; 3. Front fixing plate; 4. Rear fixing plate; 5. Temperature measuring device; 6. Battery. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0037] As shown in the figure, this application embodiment provides a battery box 10, including multiple battery heating plates 1, two L-shaped battery heating plates 1, a front fixing plate 3, a rear fixing plate 4, and multiple temperature measuring devices 5. The two L-shaped battery heating plates 2, the front fixing plate 3, and the rear fixing plate 4 are connected to form a square frame. Multiple battery heating plates 1 are arranged in the square frame, wherein the two ends of the battery heating plates 1 are respectively fixedly connected to the two L-shaped battery heating plates 2. The temperature measuring devices 5 are installed at the bottom of the battery heating plates 1, and the temperature measuring probes of the temperature measuring devices 5 measure the temperature at the bottom of the batteries 6. Multiple batteries 6 are placed between adjacent battery heating plates 1.

[0038] As shown in the figure, a battery heating plate 1 according to an embodiment of this application includes:

[0039] The side heating part 11 is used to transfer heat to the side of the battery 6. The side heating part 11 is provided with multiple first heating channels 111, multiple first hollow channels 112 and multiple first through holes 113. The multiple first heating channels 111 and multiple first hollow channels 112 are arranged alternately, and the first through holes 113 penetrate the first hollow channels 112.

[0040] The bottom heating part 12 is vertically connected to the side heating part 11 and is used to transfer heat to the bottom of the battery 6. The bottom heating part 12 is provided with multiple second heating channels 121, multiple second hollow channels 122 and multiple second through holes 123. The multiple second heating channels 121 and multiple second hollow channels 122 are arranged alternately, and the second through holes 123 penetrate the second hollow channels 122.

[0041] Multiple heating elements are disposed in the first heating channel 111 and the second heating channel 121 for emitting thermal radiation;

[0042] Spacer element 13 is disposed in the first through hole 113 and the second through hole 123 to form a space between the battery 6 and the side heating part 11 and the bottom heating part 12.

[0043] By providing heating elements in the first heating channel 111 of the lateral heating section 11 and the second heating channel 121 of the bottom heating section 12, the battery heating plate 1 can radiate heat to the bottom and sides of the battery 6. At the same time, the spacer element 13 provided in the first through hole 113 and the second through hole 123 provides support for the battery 6 in the lateral heating section 11 and the bottom heating section 12, respectively, achieving non-contact heating between the battery 6 and the battery heating plate 1. Since the lateral heating section 11 of the battery heating plate 1 heats the sides of the battery 6 and the bottom heating section 12 of the battery heating plate 1 heats the bottom of the battery 6, the heating area of ​​the battery heating plate 1 on the battery 6 is increased, the heat conduction path of the battery 6 is shortened, thereby improving heating efficiency, reducing the baking time of the battery 6, and reducing energy consumption. Furthermore, the arrangement of the first hollow channel 112 of the lateral heating section 11 and the second hollow channel 122 of the bottom heating section 12 reduces the weight of the battery heating plate 1, thereby reducing the overall weight of the battery box 10 and extending the service life of the battery heating plate 1. At the same time, the multiple first heating channels 111 and multiple first hollow channels 112 are arranged alternately, and the multiple second heating channels 121 and multiple second hollow channels 122 are arranged alternately. Therefore, the first hollow channels 112 and the second hollow channels 122 can respectively store the radiated heat of the heating elements in the first heating channels 111 and the second heating channels 121, thereby avoiding drastic changes in heat and keeping the heating temperature stable, ensuring the uniformity of battery heating plate 1 heating the battery.

[0044] Understandably, the heating element can be an electric heating wire. When current passes through the electric heating wire, an electromagnetic heating effect is generated, and the electric heating wire is heated and emits thermal radiation.

[0045] As shown in the figure, in some embodiments, the battery heating plate 1 further includes:

[0046] Multiple battery limiting blocks 14 are disposed on the top of the side heating section 11 and are spaced apart along the length of the side heating section 11 to separate adjacent batteries 6.

[0047] The adjacent batteries 6 are separated by the battery limiting block 14, which allows for better heating of the batteries 6 and better vacuuming of the water evaporated from the batteries 6.

[0048] It should be noted that the number of battery limiting blocks 14 can be 1, 2, 3, 4, 5 or more, and the user can select the number of batteries 6 of the required size to be baked and dried. In this embodiment, the number of battery limiting blocks 14 is 6.

[0049] Further, as shown in the figure, the battery limiting block 14 includes:

[0050] The limiting part 141 includes a first limiting part 1411 extending along the length direction of the lateral heating part 11 and a second limiting part 1412 extending along the thickness direction of the lateral heating part 11. The first limiting part 1411 and the second limiting part 1412 are connected to form a cross-shaped structure.

[0051] The connecting part 142 includes a first connecting part 1421 and a second connecting part 1422. The first connecting part 1421 is connected to one end of the second limiting part 1412, and the second connecting part 1422 is connected to the other end of the second limiting part 1412. The first connecting part 1421 is located on one side of the lateral heating part 11, and the second connecting part 1422 is located on the other side of the lateral heating part 11. The first connecting part 1421 is provided with a first screw hole, and the second connecting part 1422 is provided with a second screw hole.

[0052] The side heating part 11 is provided with a third screw hole. The connecting element passes through the first screw hole, the third screw hole and the second screw hole in sequence to realize the fixed connection between the battery limiting block 14 and the side heating part 11.

[0053] Since the battery 6 is placed along the length direction of the lateral heating section 11, a first limiting portion 1411 extending along the length direction of the lateral heating section 11 is provided between adjacent batteries 6 placed along the length direction of the lateral heating section 11, thus creating a gap between adjacent batteries 6. A second limiting portion 1412 extending along the thickness direction of the lateral heating section 11 can support the battery 6, thus creating a gap between the battery 6 and the lateral heating section 11.

[0054] As shown in the figure, in some embodiments, the top of the first limiting part 1411 and the second limiting part 1412 are provided with a chamfered structure to guide the battery 6 into the space between adjacent battery heating plates 1.

[0055] Since the battery 6 is placed between the two battery heating plates 1 when it is placed in the battery box 10, in order to avoid the battery 6 from rubbing against the battery heating plates 1 and to better place the battery 6 between the two battery heating plates 1, a chamfer structure is provided on the top of the first limiting part 1411 and the second limiting part 1412 to guide the battery 6 into the space between the two battery heating plates 1.

[0056] As shown in the figure, in some embodiments, the lateral heating part 11 and the bottom heating part 12 are T-shaped structures integrally formed of aluminum.

[0057] The side heating element 11 and bottom heating element 12, made of aluminum, have good mechanical strength, high pressure resistance, long service life, and uniform heat dissipation. Furthermore, the side heating element 11 and bottom heating element 12 are formed into a T-shape. The side heating element 11 provides lateral support to the battery 6 through the spacer element 13, and the bottom heating element 12 provides bottom support to the battery 6 through the spacer element 13, thereby securing the battery 6 within the battery housing 10.

[0058] Furthermore, as shown in the figure, the bottom heating section 12 is divided by the side heating section 11 into:

[0059] The first heating part 124 has a first overlapping part 126 at its end;

[0060] The second heating part 125 has a second overlapping part 127 at its end;

[0061] The first overlapping portion 126 and the second overlapping portion 127 of the adjacent battery heating plates 1 cooperate to overlap each other and jointly transfer heat to the bottom of the battery 6.

[0062] The first heating part 124 of the adjacent battery heating plate 1 can support part of the bottom of the battery 6, while the second heating part 125 can support the other part of the bottom of the battery 6, thus completing the support of the battery 6. Since there are multiple battery heating plates 1 in the battery box 10, in order to ensure that the battery heating plates 1 can be stable and not collide with each other, a first overlapping part 126 is provided in the first heating part 124 and a second overlapping part 127 is provided in the second heating part 125. The first overlapping part 126 and the second overlapping part 127 of the adjacent battery heating plates 1 cooperate with each other, so that the adjacent battery heating plates 1 can cooperate with each other to support the bottom of the battery 6, and at the same time avoid the collision between adjacent battery heating plates 1, ensuring that the cooperation between adjacent battery plates 6 is consistent, so that the battery heating plate 1 heats the battery 6 evenly.

[0063] As shown in the figure, in some embodiments, the lateral heating section 11 is provided with a first arcuate groove 114 extending along the length direction of the lateral heating section 11 in the thickness direction corresponding to the first heating channel 111.

[0064] The bottom heating section 12 is provided with a second arc-shaped groove 128 extending along the length direction of the bottom heating section 12 in the thickness direction corresponding to the second heating channel 121.

[0065] The first arc-shaped groove 114 and the second arc-shaped groove 128 reduce the thickness of the lateral heating part 11 and the bottom heating part 12 in the corresponding areas of the first heating channel 111 and the second heating channel 121, thereby reducing the weight of the electromagnetic heating plate. Because this application uses non-contact thermal radiation heating, it is not necessary for the battery heating plate 1 to contact the battery 6. Therefore, the provision of the first arc-shaped groove 114 and the second arc-shaped groove 128 does not affect the heating efficiency of the battery 6. At the same time, since the thickness of the corresponding areas of the first heating channel 111 and the second heating channel 121 is reduced, the heating element can radiate to the battery 6 more quickly, thereby improving the heating efficiency.

[0066] As shown in the figure, in some embodiments, the spacer element 13 extends 2-3 mm beyond the first through hole 113 and the second through hole 123 on the side facing the battery 6. Since the spacer element 13 can support the battery 6, the distance between the battery 6 and the side heating part 11 and the bottom heating part 12 can be 2-3 mm. At this distance, the side heating part 11 and the bottom heating part 12 can effectively radiate heat to the battery 6.

[0067] Since existing methods measure the temperature inside the oven or the battery heating plate 1, it is difficult to determine the specific temperature of the battery 6. Therefore, in some embodiments, the bottom heating part 12 is provided with multiple third through holes for a temperature probe to pass through and measure the temperature at the bottom of the battery 6. By passing the temperature probe through the third through holes, the temperature at the bottom of the battery 6 can be directly measured, providing a precise real-time temperature reading and facilitating temperature control.

[0068] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A battery heating plate, characterized by, include: A lateral heating section is used to transfer heat to the side of the battery. The lateral heating section is provided with multiple first heating channels, multiple first hollow channels and multiple first through holes. The multiple first heating channels and multiple first hollow channels are arranged alternately, and the first through holes pass through the first hollow channels. The bottom heating section is vertically connected to the side heating section and is used to transfer heat to the bottom of the battery. The bottom heating section is provided with multiple second heating channels, multiple second hollow channels and multiple second through holes. The multiple second heating channels and multiple second hollow channels are arranged alternately, and the second through holes pass through the second hollow channels. The side heating section and the bottom heating section are a T-shaped structure integrally formed of aluminum. The bottom heating section is divided by the side heating section into: A first heating part, wherein a first overlapping part is provided at the end of the first heating part; The second heating part has a second overlapping part at its end; The first and second overlapping portions of the adjacent battery heating plates cooperate to overlap each other and jointly transfer heat to the bottom of the battery. Multiple heating elements are disposed in the first heating channel and the second heating channel to emit thermal radiation; A spacer element is disposed in the first through hole and the second through hole to create a space between the battery and the side heating part and the bottom heating part; Multiple battery limiting blocks are disposed on the top of the lateral heating section and are spaced apart along the length direction of the lateral heating section to separate adjacent batteries; The battery limiting block includes: The limiting portion includes a first limiting portion extending along the length direction of the lateral heating portion and a second limiting portion extending along the thickness direction of the lateral heating portion, wherein the first limiting portion and the second limiting portion are connected to form a cross-shaped structure; The connecting part includes a first connecting part and a second connecting part. The first connecting part is connected to one end of the second limiting part, and the second connecting part is connected to the other end of the second limiting part. The first connecting part is disposed on one side of the lateral heating part, and the second connecting part is disposed on the other side of the lateral heating part. The first connecting part is provided with a first screw hole, and the second connecting part is provided with a second screw hole. The lateral connecting part is provided with a third screw hole. The connecting element passes through the first screw hole, the third screw hole and the second screw hole at the same time to realize the fixed connection between the battery limiting block and the lateral heating part.

2. The battery hot plate of claim 1, wherein, The top of the first limiting part and the second limiting part are provided with a chamfered structure to guide the battery into the space between the adjacent battery heating plates.

3. The battery heating panel of claim 1, wherein, The lateral heating section is provided with a first arc-shaped groove extending along the length direction of the lateral heating section in the thickness direction corresponding to the first heating channel; The bottom heating section has a second arc-shaped groove extending along the length direction of the bottom heating section in the thickness direction corresponding to the second heating channel.

4. The battery heating panel of claim 1, wherein, The length of the spacer element extending from the first through hole and the second through hole on the side facing the battery is 2-3 mm.

5. The battery heating plate according to claim 1, characterized in that, The bottom heating section is also provided with multiple third through holes for passing a temperature probe through the third through holes to measure the temperature at the bottom of the battery.

6. A battery storage box, characterized in that, Includes the battery heating plate as described in any one of claims 1-5.

Images