CN112271373A - Battery pack and battery module thereof - Google Patents
Battery pack and battery module thereof Download PDFInfo
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- CN112271373A CN112271373A CN202011161589.5A CN202011161589A CN112271373A CN 112271373 A CN112271373 A CN 112271373A CN 202011161589 A CN202011161589 A CN 202011161589A CN 112271373 A CN112271373 A CN 112271373A
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- 238000005070 sampling Methods 0.000 claims abstract description 121
- 230000006698 induction Effects 0.000 claims description 6
- 239000004593 Epoxy Substances 0.000 claims description 3
- 239000003292 glue Substances 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a battery pack and a battery module thereof, wherein the battery module of the battery pack comprises a plurality of battery cores and is arranged adjacent to one surface of the plurality of battery cores, and the plurality of battery cores are sequentially and laterally adjacent to each other; the battery cell support is plate-shaped and arranged above the plurality of battery cells, a first space is arranged between the battery cell support and each battery cell, and the battery cell support is provided with at least one opening; circuit sampling board, circuit sampling board sets up on the busbar support, circuit sampling board has the main part and extends to at least one sampling portion in the first space from the main part via at least one opening, and every in at least one sampling portion is provided with sampling response portion, this battery module is through opening on the busbar support, extend the temperature sampling portion on the circuit sampling board through the opening and install in the space between busbar support and electric core, utilize the fixed temperature sampling portion in space between the two, extra fastener has been saved, the cost is reduced.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a battery pack and a battery module thereof.
Background
The battery cell in the battery module can lead to the too high of battery temperature in continuous circulation charging and discharging process, lead to the decline of battery primitive performance, in order to keep the stability of battery performance, need to monitor battery temperature closely, in present battery temperature monitoring field, adopt NTC (negative temperature coefficient) thermistor to monitor battery core surface temperature usually, install NTC thermistor on the surface of battery cell usually, fix with the glue of gluing, or use extra fastener to push down NTC thermistor fixed mounting on the surface of battery cell, it is possible to make glue of gluing or fastener pine take off because of the module vibrations in the module use like this, thereby influence normal temperature monitoring function, and can increase assembly cost and material cost undoubtedly if use extra fastener.
Disclosure of Invention
The invention aims to provide a battery pack and a battery module thereof, wherein the battery module of the battery pack can arrange a temperature sampling induction part on a circuit sampling plate in a space between a busbar support and a battery core, and the temperature sampling induction part is fixed by utilizing the space between the busbar support and the battery core, so that an additional fastening device is omitted, and the assembly cost and the material cost are reduced.
In order to solve the above technical problem, an embodiment of the present invention provides a battery module, including:
a plurality of cells laterally abutting one another in sequence;
the battery comprises a busbar support, a plurality of battery cores and a plurality of battery modules, wherein the busbar support is plate-shaped and is arranged adjacent to one surface of the plurality of battery cores, a first space is arranged between the busbar support and the battery cores, and the busbar support is provided with at least one opening;
the circuit sampling board is arranged on the bus bar bracket, the circuit sampling board is provided with a main body and at least one sampling part extending from the main body into the first space through the at least one opening, and each of the at least one sampling part is provided with a sampling induction part.
The embodiment of the invention provides a battery pack which comprises the battery module.
This battery module is through opening on the busbar support, with the temperature sampling response portion on the circuit sampling board extend through the opening install in the space between busbar support and electric core, utilize the fixed temperature sampling response portion in space between the two, saved extra fastener, reduced assembly cost and material cost.
In one embodiment, the sampling sensing part is disposed at an end of each of the sampling parts.
In one embodiment, the first space is filled with heat-conducting glue.
In one embodiment, the length of the sampling portion in the direction in which the sampling portion extends is greater than the length of the opening in the direction in which the sampling portion extends.
In one embodiment, the sampling sensing portion has a protective device, which is an annular member made of an epoxy plate, and the sampling sensing portion is located within the annular member.
In one embodiment, the sampling portion is formed by slitting the circuit sampling plate.
In one embodiment, the at least one sampling portion is two sampling portions; the main body comprises a base part and two connecting parts extending from the base part along the arrangement direction of the battery cells, and the two sampling parts are respectively arranged on the two connecting parts.
In one embodiment, the sampling sensing part is an NTC thermistor.
In one embodiment, the length of the sampling portion in the direction in which the sampling portion extends is twice the width of the sampling portion.
Drawings
Fig. 1 is a schematic structural diagram of a battery module according to an embodiment of the invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at a location A;
FIG. 3 is a schematic diagram of a bus bar support according to an embodiment of the invention;
fig. 4 is a schematic structural diagram of a circuit sampling board according to an embodiment of the present invention.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The embodiments of the present invention will be described in detail below with reference to the accompanying drawings in order to more clearly understand the objects, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely intended to illustrate the spirit of the technical solution of the present invention.
In the following description, for the purposes of illustrating various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that the embodiments may be practiced without one or more of the specific details. In other instances, well-known devices, structures and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.
Throughout the specification and claims, the word "comprise" and variations thereof, such as "comprises" and "comprising," are to be understood as an open, inclusive meaning, i.e., as being interpreted to mean "including, but not limited to," unless the context requires otherwise.
Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
As used in this specification and the appended claims, the singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and/or" unless the context clearly dictates otherwise.
In the following description, for the purposes of clearly illustrating the structure and operation of the present invention, directional terms will be used, but terms such as "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", "longitudinal", "lateral", etc. should be construed as words of convenience and should not be construed as limiting terms.
The battery module comprises a plurality of battery cells, wherein the battery cells are sequentially and laterally abutted with each other; the battery cell support is plate-shaped and arranged above the plurality of battery cells, a first space is arranged between the battery cell support and each battery cell, and the battery cell support is provided with at least one opening; the circuit sampling board, the circuit sampling board sets up on the busbar support, and the circuit sampling board has the main part and extends to at least one sampling portion in the first space from the main part via at least one opening, and every in at least one sampling portion is provided with sampling response portion.
Embodiments of the present invention are described below with reference to the drawings. In this embodiment, as shown in fig. 1 and fig. 2, where fig. 2 is an enlarged view of a partial position a in fig. 1, the battery module of this embodiment includes a plurality of battery cells (not shown in the figure), a bus bar bracket 1, a circuit sampling plate 2, a bus bar 3, a connecting sheet 4, and an interface 5. In the illustrated embodiment, the busbar mount 1 is substantially rectangular plate-shaped, and covers the cells, and is disposed adjacent to the upward facing surface of each cell. The cells are arranged next to one another in succession with side faces, which are preferably the faces with the largest area size. The surface of the battery cell opposite to the bus bar support 1 (i.e. the surface of each battery cell facing upwards) is further provided with a positive electrode tab post and a negative electrode tab post (not shown in the figure), which are respectively arranged at the positions of the surface close to the two ends of the battery cell. The positive lug posts and the negative lug posts of two adjacent electric cores are respectively connected between the electric cores through the busbar 3, and then series connection between the electric cores is realized. The circuit sampling plate 2 is connected with the busbar 3 through the connecting sheet 4, and the voltage on the busbar is acquired according to the voltage, namely the voltage of the corresponding electric core is acquired. The acquired voltage may be output to an external controller through the interface 5. Each battery cell is provided with an explosion-proof valve (not shown in the figure) on the face opposite to the busbar support 1 (namely, the face of each battery cell facing upwards), and the busbar support 1 is provided with a plurality of through holes 11 opposite to the explosion-proof valves of the battery cells, so that when the expansion air pressure inside the battery cells is too large, the expansion air can be discharged through the explosion-proof valves and the through holes 11, and the explosion of the whole battery cell is avoided. The through hole 11 may be oval or have other shapes, which is not limited herein.
In the embodiment shown, the battery module is arranged with two circuit sampling boards 2, and the circuit sampling boards 2 generally adopt flexible printed circuit boards (FPCs) which can be better attached to the surface of the bus bar support 1, so that the internal space of the battery module can be more effectively utilized. As shown in FIG. 3, the body 21 in the illustrated embodiment is generally "U" shaped, but it should be understood that the body 21 may have other shapes, such as rectangular. The circuit sampling plate 2 is installed on the busbar support 1 as shown in fig. 4 and is longitudinally arranged along the busbar support 1, and the circuit sampling plate 2 is installed between the positive and negative electrode ear posts of the battery cell. The circuit sampling plate 2 includes a main body 21 and a sampling portion 22, and the sampling portion 22 and the main body 21 are integrally connected. As shown in fig. 2 and 4, the busbar holder 1 is also provided with an opening 12. The sampling part 22 extends from the main body 21 to the first space 23 via the opening 12, wherein the length of the sampling part 22 in the extending direction of the sampling part 22 is greater than the length of the opening 12 in the extending direction of the sampling part 22. Preferably, the length of the sampling part 22 in the extending direction of the sampling part 22 is 1.5 times the length of the opening 12 in the extending direction of the sampling part 22, so that the sampling part 22 can partially extend into the first space 23 through the opening 12.
A first space 23 is provided between the busbar holder 1 and the battery cell, and the first space 23 may be obtained by, for example, removing a partial volume at a position corresponding to the busbar holder 1. Specifically, the bus bar holder 1 has a certain thickness, which is usually a few millimeters to a dozen or so millimeters, and the first space 23 is formed by removing a certain volume of the bus bar holder from a surface facing and adjacent to the battery cell, and a portion of the sampling part 22 protruding into the first space 23 may be provided with a sampling sensing part 24. Preferably, the sampling sensing part 24 is disposed at the end of the sampling part 22, but it is understood that the sampling sensing part 24 may be disposed at other positions of the sampling part 22, and is not limited herein. It can be understood that the first space 23 should be able to accommodate the sampling sensing part 24, that is, the height of the sampling sensing part 24 is smaller than the height of the first space 23, and the width of the sampling sensing part 24 is smaller than the width of the first space 23, wherein the height direction is a direction from the battery cell to the bus bar support 1, and the width direction is a direction intersecting with the extending direction of the sampling part 22. The arrangement is such that the sampling part 24 can be just inserted into the first space 23, and the sampling induction part 24 is mounted on or close to the surface of the battery cell, forming a structure similar to a "drawer". It should be noted that the length of the sampling sensing portion 24 along the direction in which the sampling portion 22 extends is also smaller than the length of the opening 12 along the direction in which the sampling portion 22 extends, so that the sampling portion 22 can pass through the opening 12 smoothly.
The sampling sensing part 24 is usually an NTC thermistor, which is installed on the surface of the battery core, and when the temperature on the surface of the battery core changes, the resistance of the NTC thermistor changes, and the resistance signal is input to the controller through the interface 5, and the controller can obtain the corresponding temperature according to the corresponding resistance R-temperature T comparison table, so as to realize the temperature monitoring of the battery core.
This battery module is through opening on the busbar support, with the temperature sampling response portion on the circuit sampling board extend through the opening install in the space between busbar support and electric core, utilize the fixed temperature sampling response portion in space between the two, saved extra fastener, the cost is reduced, and can not appear other extra fasteners because of reasons such as vibration after a period and the problem that takes off appears.
In some embodiments, the first space 23 is filled with a thermal conductive adhesive, and the thermal conductive adhesive can bond the NTC thermistor in the first space 23, so that the NTC thermistor has a shock-proof and waterproof function and certain stability, and the NTC thermistor can uniformly acquire the temperature on the surface of the battery cell through good thermal conductive performance. In addition, preferably, the NTC thermistor may be provided with a protection device outside, and the sampling sensing part 24 is located in the protection device, and the protection device may be made of an epoxy plate, may be a ring-shaped member, and may also be a square-shaped member. When the protection device is a square member, the length, width and height of the first space 23 are preferably 1.2 times of the length, width and height of the square protection device, so that the annular member can be inserted into the first space 23, and the remaining space is filled with the heat-conducting glue, thereby not only ensuring the stability of the sampling induction part 24 in the first space and having good heat-conducting performance, but also reducing the consumption of the heat-conducting glue as much as possible and reducing the related cost.
Further, in some embodiments, the sampling portion 22 is formed by slitting the circuit sampling plate 2. As shown in fig. 2, two slits orthogonal to each other, which are denoted as a first slit 25 and a second slit 26, are cut at positions where the openings 12 of the busbar holder 1 are opposed to each other. The first slit 25 extends along the sampling portion 22, the second slit 26 is orthogonal to the first slit 25, and the second slit 26 communicates with the side of the main body 21 disposed opposite thereto. In addition, a portion of the sampling portion 22 is provided on the surface of the opening 12, and another portion extends below the opening 12 and into the first space 23, and preferably, the area of the surface portion provided on the opening 12 is one eighth of the total area of the sampling portion 22. When the sampling circuit board is subjected to a pulling force along the extending direction of the second slit 26 when the battery module is subjected to force vibration, the arrangement can buffer the pulling force and prevent the sampling part 22 from being torn. Through forming the sampling part on the circuit sampling plate 2 in a sewing way, the manufacturing is more convenient, the process cost is reduced, and simultaneously the pulling force generated by external vibration to a certain degree can be buffered.
Further, in some embodiments, as shown in fig. 1, the circuit sampling board 2 includes two sampling portions 22, the main body 21 includes a base portion and two connection portions extending from the base portion along the cell arrangement direction, and the two sampling portions are respectively disposed on the two connection portions, that is, two sides of the U shape. The temperature of electric core middle part position and the position that is close to the tip can be monitored respectively in this way to the setting, and the monitoring result of obtaining can be more comprehensive. However, it can be understood that a sampling portion may be provided corresponding to the position of each cell, so as to monitor the temperature condition of each cell. In addition, the main body 21 is further provided with a plurality of positioning holes for matching with the bosses on the busbar support 1 to realize the positioning and installation of the circuit sampling plate 2, and part of the positioning holes are slightly larger than the bosses to provide certain space redundancy and facilitate assembly.
The invention also provides a battery module which comprises the battery core, the busbar bracket, the circuit sampling plate, the connecting sheet, the interface and other parts. This battery module is through opening on the busbar support, with the temperature sampling response portion on the circuit sampling board extend through the opening install in the space between busbar support and electric core, utilize the fixed temperature sampling response portion in space between the two, saved extra fastener, the cost is reduced, and other extra fasteners can not appear and use the pine scheduling problem that takes off that appears because of reasons such as vibration for a certain time.
While the preferred embodiments of the present invention have been described in detail above, it should be understood that aspects of the embodiments can be modified, if necessary, to employ aspects, features and concepts of the various patents, applications and publications to provide yet further embodiments.
These and other changes can be made to the embodiments in light of the above detailed description. In general, in the claims, the terms used should not be construed to be limited to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which such claims are entitled.
Claims (10)
1. A battery module, comprising:
a plurality of cells laterally abutting one another in sequence;
the battery comprises a busbar support, a plurality of battery cores and a plurality of battery modules, wherein the busbar support is plate-shaped and is arranged adjacent to one surface of the plurality of battery cores, a first space is arranged between the busbar support and the battery cores, and the busbar support is provided with at least one opening;
the circuit sampling board is arranged on the bus bar bracket, the circuit sampling board is provided with a main body and at least one sampling part extending from the main body into the first space through the at least one opening, and each of the at least one sampling part is provided with a sampling induction part.
2. The battery module according to claim 1, wherein the sampling sensing part is provided at an end of each of the sampling parts.
3. The battery module according to claim 1, wherein the first space is filled with a thermally conductive paste.
4. The battery module according to claim 1, wherein a length of the sampling part in the sampling part extending direction is greater than a length of the opening in the sampling part extending direction.
5. The battery module according to claim 1, wherein the sampling sensing part has a protection device, the protection device is an annular member made of an epoxy plate, and the sampling sensing part is located in the annular member.
6. The battery module according to claim 1, wherein the sampling part is formed by slitting the circuit sampling plate.
7. The battery module according to claim 1, wherein the at least one sampling part is two sampling parts; the main body comprises a base part and two connecting parts extending from the base part along the arrangement direction of the battery cells, and the two sampling parts are respectively arranged on the two connecting parts.
8. The battery module according to claim 1, wherein the sampling sensing part is an NTC thermistor.
9. The battery module according to claim 1, wherein the length of the sampling part in the extending direction of the sampling part is twice the width of the sampling part.
10. A battery pack, comprising the battery module according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011161589.5A CN112271373A (en) | 2020-10-27 | 2020-10-27 | Battery pack and battery module thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011161589.5A CN112271373A (en) | 2020-10-27 | 2020-10-27 | Battery pack and battery module thereof |
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| Publication Number | Publication Date |
|---|---|
| CN112271373A true CN112271373A (en) | 2021-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011161589.5A Pending CN112271373A (en) | 2020-10-27 | 2020-10-27 | Battery pack and battery module thereof |
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| CN (1) | CN112271373A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209526152U (en) * | 2019-04-30 | 2019-10-22 | 宁德时代新能源科技股份有限公司 | Battery modules and battery pack |
| CN210379247U (en) * | 2019-09-27 | 2020-04-21 | 欣旺达电动汽车电池有限公司 | Battery module |
| CN210723152U (en) * | 2019-11-05 | 2020-06-09 | 蜂巢能源科技有限公司 | Battery module, battery package and vehicle |
| CN211088356U (en) * | 2019-12-11 | 2020-07-24 | 联动天翼新能源有限公司 | Cylindrical cell lithium ion battery module |
| CN213184480U (en) * | 2020-10-27 | 2021-05-11 | 远景动力技术(江苏)有限公司 | Battery pack and battery module thereof |
-
2020
- 2020-10-27 CN CN202011161589.5A patent/CN112271373A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209526152U (en) * | 2019-04-30 | 2019-10-22 | 宁德时代新能源科技股份有限公司 | Battery modules and battery pack |
| CN210379247U (en) * | 2019-09-27 | 2020-04-21 | 欣旺达电动汽车电池有限公司 | Battery module |
| CN210723152U (en) * | 2019-11-05 | 2020-06-09 | 蜂巢能源科技有限公司 | Battery module, battery package and vehicle |
| CN211088356U (en) * | 2019-12-11 | 2020-07-24 | 联动天翼新能源有限公司 | Cylindrical cell lithium ion battery module |
| CN213184480U (en) * | 2020-10-27 | 2021-05-11 | 远景动力技术(江苏)有限公司 | Battery pack and battery module thereof |
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